import rebelsky.fun.balloons.Balloon;
import rebelsky.fun.balloons.Strategist;
import rebelsky.fun.balloons.Wind;

/**
 * A more complex strategy for winning balloon races.  If you're on the
 * ground, drop a sandbag.  If you're over * 2/3 of the way up, deflate 
 * the balloon.  If you're anywhere else check the wind speed ten feet 
 * above and ten feet below.  If it's faster above, increase the inflation.  
 * If it's faster below, decrease the inflation.
 */
public class Windy
  extends Strategist
{
  /**
   * Decide what to do based on knowledge of the balloon status.
   * Ignore the wind.
   */
  public void decide(Balloon b, int maxheight, Wind w) 
  {
    // The height of the balloon
    int height = b.getHeight();
    // If the balloon popped, do nothing.
    if (b.popped()) return;
    // If we're still on the ground, drop a sandbag
    if (height == 0) {
      if (b.getSandbags() > 0) {
        b.drop();
      }
      else {
        b.inflate();
      }
    }
    // If we're more than two thirds of the way up, deflate the balloon
    else if (height > ((2 * maxheight) / 3)) {
      b.deflate();
    }
    // Otherwise, compare higher speeds and lower speeds
    else {
      if (w.getSpeed(height + 10) > w.getSpeed(height - 10)) {
        b.inflate();
      }
      else {
        b.deflate();
      }
    }
  } // decide()
} // Windy